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Aof non-OSU, non-engineering students where driving home fromgroupOwen Field when their car ran out of gas. They decided to push the car to a gas station that was exactly 2.1 mile away. The road was perfectly level. The car had a weight of 2,020 lbf. In order to just barely overcome the resistance to movement, the hapless red sweater wearers had to exert a force of 120 lbf. How much work (in Btu) did they do?

Fig: 1